Coffee machine



FIG. 1 is a perspective view of the coffee machine shown in a position of use;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-hand view thereof;

FIG. 5 is a left-hand view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is another perspective view of the coffee machine. 

CLAIM I claim the ornamental design for a coffee machine, as shown and described. 